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Chapter 2 LS, Section 1-A
Test Description: It's Alive!! Or, Is It?
Instructions: Answer all questions to get your test result.
1) A change in an organism's environment that affects the organism's activities is a ___.
A
producer
B
stimulus
C
metabolism
D
response
2) When a duck dives under water, its inner eyelids automatically raise to cover the duck's eyes. In this case, water acts as ___.
A
an enzyme
B
homeostasis
C
a reaction
D
stimulus
3) Maintaining a body temperature of 37 degrees C and a stable amount of sugar in your blood are both examples of ___.
A
photosynthesis
B
homeostasis
C
respiration
D
metabolism
4) Which of the following is a stimulus?
A
all of the answers
B
darkness
C
sound
D
gravity
5) The pupils of your eyes respond to which of the following stimuli?
A
touch
B
sound
C
scent
D
light
6) DNA is an acronym for ___.
A
deoynitrogenous acid
B
dinoribunucleic acid
C
deoxyribonucleic acid
D
decomponutrient acid
7) Both fleas and frogs leap in response to a stimulus. If a flea can leap 20 cm, and frog can jump 5 m, what percentage of the frog's jump is the flea's jump.
A
0.25 percent
B
4 percent
C
40 percent
D
25 percent
8) The human body maintains a temperature of about ___.
A
0 degrees
B
98.6 degrees C
C
37 degrees C/ 98.6F
D
none of the answers
9) When a Venus flytrap catches an insect, it is reacting to the stimulus of ___.
A
touch
B
light
C
sound
D
scent
10) Fish that live in the ice cold waters off Antarctica make a natural antifreeze that keeps them from freezing. This is the fish's way of maintaining a stable environment known as _
A
homeostasis
B
photosynthesis
C
metabolism
D
respiration
*select an answer for all questions
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